Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
vang thong » mang thong, vang thung, vang trong
dap thong » phap thong, khap thong, va thong
cong vang » cong lang, cong quang, cong ngang
ho chieu » theo chieu, hoc thieu, doi chieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - ((thanh trung) OR (thanh tung)) dap thong cong vang thong ke~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((thanh trung) OR (thanh tung)) dap thong cong vang thong ke".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((thanh trung) OR (thanh tung)) dap thong cong vang thong ke*.